1998/2000 r1 engine filters...
A1 - 23/12/08 at 03:16 PM
ive changed the filters on my engine, and in doing so the crankcase breather had to be disconnected from the airbox. she keeps spewing oil out all
over the place (its starting to seep into the footwell)
has anyone else had this problem? i thought that maybe the breather was kept under pressure by the airbox, or maybe the rings are screwed and letting
the combustion gas past to pressurise the crankcase?
any thoughts gratefully received...
cheers!
Mr Whippy - 23/12/08 at 03:19 PM
you require an oil catch tank like this -
there is a sight gauge on the side and a plug in the bottom so you can drain it if the level gets too high inside.
car engines also do this too if you ditch the breather, also check the oil level is correct if the engine is tilted more than it would be in the bike.
All engines blow gas by the rings, even when new but does get worse with wear. If there's no blue smoke in the exhaust then no problems with the
engine. Whole point of the breather is so that pressure does not build inside the engine, which could then force oil past vital seals.
[Edited on 23/12/08 by Mr Whippy]
A1 - 23/12/08 at 03:26 PM
ah! cheers! i take it cbs will do those? how would you connect the oil return to the engine?
nah, i theres no smoke at the exhaust...
Mr Whippy - 23/12/08 at 03:31 PM
quote:
Originally posted by A1
ah! cheers! i take it cbs will do those? how would you connect the oil return to the engine?
nah, i theres no smoke at the exhaust...
just type – ‘oil catch tank’ into google, there's loads of them all at different prices. The oil doesn't return, you wouldn't want that
stuff back in there anyway as it tends to be full of water (from the steam given off by combustion and water vapour)
A1 - 23/12/08 at 03:37 PM
hmmm...cause at this rate im going to be refilling her every time i take her out...i topped her up yesterday and drove about 60 miles, checked it
today and its below the sightglass...
Mr Whippy - 23/12/08 at 03:40 PM
is the engine at the same angle it is on the bike, if not you may be overfilling it
A1 - 23/12/08 at 04:59 PM
it was certainly overfilled at first,, but its emptied it all out...
i would presume that its at the same angle as on the bike, as mk made the engine mountings for it.
A1 - 23/12/08 at 05:02 PM
(at first it was only overfilled by a wee bit-not too much)
StevieB - 23/12/08 at 05:27 PM
Alternatively, you can use a small plastic drinks bottle to achieve the sam results. Go to any sprint/hillclimb meet and you'll find tht most
people do this - costs nothing, weighs nothing.
A1 - 23/12/08 at 05:42 PM
i think i may stick a drinks bottle over it...
isnt it kinda bad that this happens though? surely the oil should be staying in the engine?
StevieB - 23/12/08 at 07:12 PM
All engines will do it a bit - the breather is right on top of te gearbox, so it stands to reason that oil will get flicked up and out when
there's no cover on it.
Make sure the bottle is the right way up and run the breather hose down into it - you might need to get a longer bit of hose. Then just tie wrap the
bottle to the chassis.
If you go to a sprint/hillclimb meet you'll see the fashionable people go for the various coloured fruit shoot bottles, whereas the more
practically minded go for the panda cola clear bottle to see how much. 
A1 - 23/12/08 at 09:36 PM
haha! i went for evian
found the main part of the problem...the filler cap managed to work its way off...probably on some damned cobbles
could be worse though im sure!!
cheers for the help!
mad-butcher - 24/12/08 at 02:10 PM
Just make sure the pipe ISN'T a tight fit in the neck of the bottle if it is make a few holes round the neck and goes about half way down, the
idea is to catch the oil particles in the in the air expelled via the breather, if it's a tight fit the pressure will just blow the bottle off
the pipe.
Tony